Fabrication of aluminum oxide coated conductive polyurethane nanofibers using electrochemical oxidization process

In this research, we were succeeded in the fabrication of aluminum oxide coated poly urethane nanofibers using the combination of electro spinning and electrochemical procedures. A pristine polyurethane nanofiber doesn’t have any electrical conductivity prior to its coating by aluminum oxide layer. In order to coat on the surface of PU nanofiber, we have developed a new method of fabricating aluminum oxide coated nanofiber using electrochemical procedure. We conducted cyclic voltammetry tests for evaluating electrical conductivity. Electrochemical three electrode system was composed of an electrospun nanofiber containing aluminum foil as a working electrode. Electrospun nanofiber containing aluminum foil was oxidized and aluminum oxide was coated on the surface of nanofiber. Aluminum oxide coted PU nanofiber has a high difference of current peak in I-V graph of cyclic voltammetry. The results confirms that the aluminum oxide coated PU nanofibers possess an excellent electrical conductivity that can be used for various applications.